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Title: Higgsed Chromo-Natural Inflation

Abstract

We demonstrate that Chromo-Natural Inflation can be made consistent with observational data if the SU(2) gauge symmetry is spontaneously broken. Working in the Stueckelberg limit, we show that isocurvature is negligible, and the resulting adiabatic fluctuations can match current observational constraints. Observable levels of chirally-polarized gravitational radiation (r ~ 10-3) can be produced while the evolution of all background fields is sub-Planckian. The gravitational wave spectrum is ampli ed via linear mixing with the gauge field fluctuations, and its amplitude is not simply set by the Hubble rate during in inflation. This allows observable gravitational waves to be produced for an in inflationary energy scale below the GUT scale. The tilt of the resulting gravitational wave spectrum can be either blue or red.

Authors:
 [1];  [2];  [1];  [3]
  1. Univ. of Illinois, Urbana-Champaign, IL (United States)
  2. Univ. of Chicago, IL (United States)
  3. PDT Partners, New York, NY (United States)
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1368034
Grant/Contract Number:  
FG02-90ER40560; SC0009924; SC0015655
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 12; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Chern-Simons Theories; Spontaneous Symmetry Breaking; Cosmology of Theories beyond the SM

Citation Formats

Adshead, Peter, Martinec, Emil, Sfakianakis, Evangelos I., and Wyman, Mark. Higgsed Chromo-Natural Inflation. United States: N. p., 2016. Web. doi:10.1007/JHEP12(2016)137.
Adshead, Peter, Martinec, Emil, Sfakianakis, Evangelos I., & Wyman, Mark. Higgsed Chromo-Natural Inflation. United States. https://doi.org/10.1007/JHEP12(2016)137
Adshead, Peter, Martinec, Emil, Sfakianakis, Evangelos I., and Wyman, Mark. Tue . "Higgsed Chromo-Natural Inflation". United States. https://doi.org/10.1007/JHEP12(2016)137. https://www.osti.gov/servlets/purl/1368034.
@article{osti_1368034,
title = {Higgsed Chromo-Natural Inflation},
author = {Adshead, Peter and Martinec, Emil and Sfakianakis, Evangelos I. and Wyman, Mark},
abstractNote = {We demonstrate that Chromo-Natural Inflation can be made consistent with observational data if the SU(2) gauge symmetry is spontaneously broken. Working in the Stueckelberg limit, we show that isocurvature is negligible, and the resulting adiabatic fluctuations can match current observational constraints. Observable levels of chirally-polarized gravitational radiation (r ~ 10-3) can be produced while the evolution of all background fields is sub-Planckian. The gravitational wave spectrum is ampli ed via linear mixing with the gauge field fluctuations, and its amplitude is not simply set by the Hubble rate during in inflation. This allows observable gravitational waves to be produced for an in inflationary energy scale below the GUT scale. The tilt of the resulting gravitational wave spectrum can be either blue or red.},
doi = {10.1007/JHEP12(2016)137},
journal = {Journal of High Energy Physics (Online)},
number = 12,
volume = 2016,
place = {United States},
year = {Tue Dec 27 00:00:00 EST 2016},
month = {Tue Dec 27 00:00:00 EST 2016}
}

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